I was just asking mean if he could include just some of this in avidemux, but this is the one to give anyone looking for raw statistics in the future. =D It even works with mkv, which is pretty rare, although per-track bitrate isn't supported, like most tools. Probably a lavf limitation. Great work, fsinapsi.
Minor design issue, the histograms are sized by dividing by the total number of frames, not the peak, so they're always very small with lots of dead space. (Avidemux has the same problem.)
The only real issues I have are in how much of a pain GTK usability can be, but that's just puff.
It'd be possible to include the matrix in the DRF quality calculation, probably, though for all the effort you can put into having a computer tell you what your eyes are going to see, you might as well just watch ten seconds of it.